HDMI Controller Circuit For Transmitting Digital Data To Compatible Audio Device Using Address Decoder Where Values Are Written To Registers Of Sub-Circuits

TL;DR: In this article, a high-definition media interface (HDMI) controller with a modular design internal bus structure is presented, which includes a circuit interface, an address decoder coupled to the circuit interface and a plurality of sub-circuits.

Abstract: The present invention provides a high definition media interface (HDMI) controller having a modular design internal bus structure, and applications thereof. The controller includes a circuit interface, an address decoder coupled to the circuit interface, a plurality of sub-circuits, wherein each sub-circuit includes registers used to configure and control the sub-circuit, and a bus that couples the registers of each sub-circuit to the address decoder. After startup of the controller, the sub-circuits are configured by using the circuit interface, address decoder, and bus to write values to the registers of the sub-circuits. The sub-circuits of the controller include a video pixel sampler, an audio sampler, a frame composer, and a power controller. The video sampler can be configured to convert one of a plurality of RGB and YCbCr signals to a common format signal used by other sub-circuits of the controller.